Modern Family, which will end its 11-season, 250-episode run on April 8, may be the last sitcom of its kind. Long-running comedies like Friends, The Big Bang Theory, Married with Children, Murphy Brown, Cheers, Frasier and M*A*S*H were once a staple of TV. But the streaming era is changing the game. "It's going to be so much harder for a show to capture this country's attention, because (viewers) just have too many options now," says Modern Family co-creator Steven Levitan says. "And because people have so many options, I think it's shortening everyone's attention span. It seems like people move on faster these days. They get three or four years and they're ready to move on to something new. It would be naïve to say that something amazing won't come along that will be every bit as good as our show or others that are well thought of, but it's just going to be a tougher road."